Dice Probability Calculator

Your details

Pick a standard polyhedral die or choose Custom to enter any number of sides.
How many dice you roll at once. Two six-sided dice = 2 here.
A flat number added to (or subtracted from) the sum. Common in D&D and other RPGs. Use negative numbers for penalties.
Choose what you want to calculate the probability of.
The total all dice must add up to. Must be between the min and max possible sum.
ProbabilityPossible
16.667%
Favorable outcomes6
Total possible rolls36
Odds (1 in N)6
Expected (average) sum7
Minimum possible sum2
Maximum possible sum12
Expected sum with modifier7
16.667% %
Rare<5Uncommon5-15Possible15-40Likely40-70Very Likely70+

16.667% chance, about 1 in 6.0 rolls.

  • There are 6 favorable outcomes out of 36 equally likely rolls for rolling the exact target sum.
  • The expected (average) sum is 7.00. Targets near this value carry the highest probability.
  • Each ordered roll is equally likely, so probability is simply favorable outcomes divided by the total.

Next stepTry switching to "Sum is at least" to see cumulative probability across multiple totals.

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